var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
//引入用户的路由
var userRouter = require("./routes/userRouter");
var studentRouter = require("./routes/studentRouter");
//引入jwt的验证
var {AuthJwt} = require("./src/utils/jwtUtil");
var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
//对前端发送过的请求进行jwt验证
app.use(AuthJwt);
//如果授权发生错误则使用该中间件进行处理
app.use((err,req,resp,next)=>{
   if(err){
         console.log(err);
         resp.json({"code":1,"msg":"未授权,请先登录"});
   }else{
     //放行
     next();
   }
})


//给userRouter安排事情
app.use("/user",userRouter);
app.use("/student",studentRouter)

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
